<template xlang="wxml">
	<view class="tki-tree">
		<view class="tki-tree-mask" :class="{'show':showTree}" @tap="_cancel"></view>
		<view class="tki-tree-cnt" :class="{'show':showTree}">
			<view class="tki-tree-bar"
			>
				<!--<view class="tki-tree-bar-cancel" :style="{'color':cancelColor}" hover-class="hover-c" @tap="_cancel">取消</view>-->
				<view class="tki-tree-bar-cancel"  @tap="_cancel">
					<image :src="srcfanhui" class="item-icon-sys" mode=""></image>
				</view>
				<view class="tki-tree-bar-title" :style="{'color':titleColor}">{{title}}</view>
				<view class="tki-tree-bar-confirm" :style="{'color':confirmColor}" hover-class="hover-c" @tap="_confirm">完成</view>
			</view>
			<view class="tki-tree-view">
				<scroll-view class="tki-tree-view-sc" :scroll-y="true">
					<input type="text" v-model="servalue" class="uni-input" confirm-type="search" placeholder="搜索"
					@input="onKeyInput"
					style="border:1px #efefef solid;font-size: 25rpx;height: 50rpx;line-height: 50rpx;"
					/>
					<block v-for="(item, index) in treeList" :key="index">
						<view class="tki-tree-item" :style="[{
							paddingLeft: item.rank*15 + 'px',
							zIndex: item.rank*-1 +50
						}]"
						 :class="{
							border: border === true,
							show: item.show,
							last: item.lastRank,
							showchild: item.showChild,
							open: item.open,
						}">
							<view class="tki-tree-label" @tap.stop="_treeItemTap(item, index)">
								<image class="tki-tree-icon" :src="item.lastRank ? lastIcon :item.showlevel?currentIcon: item.showChild ? currentIcon : defaultIcon"></image>
								{{item[displayname]}}
							</view>
							<view v-if="item.isEnabled=='1'">
								<view class="tki-tree-check" @tap.stop="_treeItemSelect(item, index)" v-if="selectParent?true:item.lastRank">
									<view class="tki-tree-check-yes" v-if="item.checked" :class="{'radio':multiple}" :style="{'border-color':confirmColor}">
										<view class="tki-tree-check-yes-b" :style="{'background-color':confirmColor}"></view>
									</view>
									<view class="tki-tree-check-no" v-else :class="{'radio':multiple}" :style="{'border-color':confirmColor}"></view>
								</view>
							</view>
							<view v-else>
								
							</view>
						</view>
					</block>
				</scroll-view>
			</view>
		</view>
	</view>
</template>

<script>
	var self;
	export default {
		name: "tki-tree",
		props: {
			range: {
				type: Array,
				default: function() {
					return []
				}
			},
			idKey: {
				type: String,
				default: 'id'
			},
			rangeKey: {
				type: String,
				default: 'label'
			},
			title: {
				type: String,
				default: ''
			},
			multiple: { // 是否可以多选
				type: Boolean,
				default: false
				// default: true
			},
			selectParent: { //是否可以选父级
				type: Boolean,
				default: false
			},
			selectvalue: {
				type: String,
				default: ''
			},
			foldAll: { //折叠时关闭所有已经打开的子集，再次打开时需要一级一级打开
				type: Boolean,
				default: false
			},
			confirmColor: { // 确定按钮颜色
				type: String,
				default: '#b6b6b6' // #07bb07
			},
			cancelColor: { // 取消按钮颜色
				type: String,
				default: '' // #757575
			},
			titleColor: { // 标题颜色
				type: String,
				default: '' // #757575
			},
			currentIcon: { // 展开时候的ic
				type: String,
				default:"../../static/images/icon-zhankai.png"
			},
			defaultIcon: { // 折叠时候的ic
				type: String,
				default:"../../static/images/icon-shouqi.png"
				//default: ''
			},
			lastIcon: { // 没有子集的ic
				type: String,
				default: ''
			},
			border: { // 是否有分割线
				type: Boolean,
				default: true
			},
			displayname: {
				type: String,
				default: 'name'
			},
			
		},
		data() {
			return {
				showTree: false,
				treeList: [],
				selectIndex: -1,
				oldtreeList:"",
				servalue:"",
				srcfanhui: "../../static/images/icon-fanhui.png",
			}
		},
		computed: {},
		methods: {
			onKeyInput: function(event) {
				self=this;
				//console.log(this.selectvalue);
				if(this.selectvalue=="zrr" || this.selectvalue=="syr"){
					this.$emit("KeyInput", event.target.value);
				}else{					
					if(self.oldtreeList==""){
						self.oldtreeList=self.treeList;
					}
				
					var newtreeList=self.oldtreeList.filter(item =>{
						if(item.Desc!=undefined){
							return item.Desc.indexOf(event.target.value)!=-1;
							}else{
								return item.name.indexOf(event.target.value)!=-1;
							}
						});
					self.treeList=newtreeList;
				
				}
			},
			_show() {
				this.showTree = true
			},
			_hide() {
				this.showTree = false
			},
			_cancel() {
				this._hide()
				this.$emit("cancel", '');
			},
			_confirm() {
				// 处理所选数据
				let rt = [],
					obj = {};
				this.treeList.forEach((v, i) => {
					if (this.treeList[i].checked) {
						obj = {}
						obj.parents = this.treeList[i].parents
						obj = Object.assign(obj, this.treeList[i].source)
						// 移除子元素
						delete obj.children
						rt.push(obj)
					}
				})
				this._hide()
				this.$emit("confirm", rt);
			},
			//扁平化树结构
			_renderTreeList(list = [], rank = 0, parentId = [], parents = []) {
				list.forEach(item => {
					this.treeList.push({
						id: item.id,
						name: item.label,
						source: item,
						parentId, // 父级id数组
						parents, // 父级id数组
						rank, // 层级
						showChild: false, //子级是否显示
						open: false, //是否打开
						//show: rank === 0, // 自身是否显示
						show:true,
						showlevel:true,
						isEnabled:item.isEnabled,
						hideArr: [],
						orChecked: item.checked ? item.checked : false,
						checked: item.checked ? item.checked : false,
					})
					if (Array.isArray(item.children) && item.children.length > 0) {
						// console.log(item)
						let parentid = [...parentId],
							parentArr = [...parents],
							childrenid = [...childrenid];
						delete parentArr.children
						parentid.push(item.id);
						parentArr.push({
							"id": item.id,
							"label": item.label
						})
						
						this._renderTreeList(item.children, rank + 1, parentid, parentArr);
					} else {
						this.treeList[this.treeList.length - 1].lastRank = true;
					}
				})
				// console.log(list)
			},
			// 处理默认选择
			_defaultSelect() {
				this.treeList.forEach((v, i) => {
					if (v.checked) {
						this.treeList.forEach((v2, i2) => {
							if (v.parentId.toString().indexOf(v2.parentId.toString()) >= 0) {
								v2.show = true
								if (v.parentId.includes(v2.id)) {
									v2.showChild = true;
									v2.open = true;
								}
							}
						})
					}
				})
			},
			// 点击
			_treeItemTap(item, index) {
				if (item.lastRank === true) {
					//点击最后一级时触发事件
					this.treeList[index].checked = !this.treeList[index].checked
					this._fixMultiple(index)
					return;
				}
				let list = this.treeList;
				let id = item.id;
				item.showChild = !item.showChild;
				item.showlevel=false;
				item.open = item.showChild ? true : !item.open;
				list.forEach((childItem, i) => {
					if (item.showChild === false) {
						//隐藏所有子级
						if (!childItem.parentId.includes(id)) {
							return;
						}
						childItem.showlevel=false;
						if (!this.foldAll) {
							if (childItem.lastRank !== true && !childItem.open) {
								childItem.showChild = false;
							}
							// 为隐藏的内容添加一个标记
							if (childItem.show) {
								childItem.hideArr[item.rank] = id
							}
						} else {
							if (childItem.lastRank !== true) {
								childItem.showChild = false;
							}
						}
						childItem.show = false;
					} else {
						// 打开子集
						if (childItem.parentId[childItem.parentId.length - 1] === id) {
							childItem.show = true;
						}
						// 打开被隐藏的子集
						if (childItem.parentId.includes(id) && !this.foldAll) {
							childItem.showlevel=false;
							// console.log(childItem.hideArr)
							if (childItem.hideArr[item.rank] === id) {
								childItem.show = true;
								if (childItem.open && childItem.showChild) {
									childItem.showChild = true
								} else {
									childItem.showChild = false
								}
								childItem.hideArr[item.rank] = null
							}
							// console.log(childItem.hideArr)
						}
					}
				})
				// console.log(this.treeList)
			},
			_treeItemSelect(item, index) {
				this.treeList[index].checked = !this.treeList[index].checked
				this._fixMultiple(index)
			},
			// 处理单选多选
			_fixMultiple(index) {
				if (!this.multiple) {
					// 如果是单选
					this.treeList.forEach((v, i) => {
						if (i != index) {
							this.treeList[i].checked = false
						} else {
							this.treeList[i].checked = true
						}
					})
				}
			},
			// 重置数据
			_reTreeList() {
				this.treeList.forEach((v, i) => {
					this.treeList[i].checked = v.orChecked
				})
			},
			_initTree(range = this.range){
				this.treeList = [];
				this._renderTreeList(range);
				this.$nextTick(() => {
					this._defaultSelect(range)
				})
			}
		},
		watch: {
			range(list) {
				this._initTree(list);
			},
			multiple() {
				if (this.range.length) {
					this._reTreeList();
				}
			},
			selectParent() {
				if (this.range.length) {
					this._reTreeList();
				}
			},
		},
		mounted() {
			this._initTree();
		}
	}
</script>

<style scoped>
	@import "./style.css";
	
	.item-icon-sys {
		width: 40upx;
		height: 40upx;
	}
	
	.disabled {
	  /* 阻止点击事件 */
	  pointer-events: none;
	}
	

</style>
